一种新型小型宽带微带天线的设计

随着WLAN与蓝牙技术的发展,2.4 GHz频段越来越受到关注,因此,设计了一种新型的应用于2.4 GHz频段的天线.该天线结构紧凑,可以方便地植入无线通信设备中,有较强的实用性.它通过在矩形微带天线的辐射贴片上加载窄缝隙和一些谐振单元,利用直接或间接耦合作用,来实现微带天线的小型化宽频带.其阻抗带宽达到了885 MHz(2 010~2 899 MHz,回波损耗小于-10 dB),辐射方向图表明该天线性能较好,增益达到了6.7 dBi.

The design of a new small-scale broadband microstrip antenna

With the development of WLAN and Bluetooth technology, the 2.4 GHz frequency band antenna is getting more and more attention. Therefore, a new type of antenna used in 2.4 GHz frequency band is proposed. The antenna is compact and can be easily embedded in wireless communication devices, and it has good practicability. It loads the narrow gap and some resonance units on the radiation patch of the rectangular microstrip antenna, using direct or indirect coupling to achieve the miniaturization and broadband of microstrip antenna. The impedance bandwidth is 885 MHz （2 010 -2 899 MHz, return loss less than-10 dB）, and the radiation patterns show good performance of the antenna. The gain achieves 6.7 dBi.